The Satoh ST1540 is a compact utility tractor produced from 1977 to 1980 by Satoh. It features a 3-cylinder liquid-cooled diesel engine producing 14.8 hp (11.0 kW). The tractor has a 6-speed gear transmission with 6 forward and 2 reverse gears, arranged as three speeds in two ranges (low-high). The ST1540 variant is a 4WD model, designed for compact utility tasks.